Utflizing exhaust-steam



(No Mbdel.)

T.-.- LITOHPIELD a? 1). RBNSHAW.

UTILIZING EXHAUST STEAM.

No. 260,034. Pafcented Jiine 2'7, 1882.

nmy

r u mu 1 1 Ilil llll J x u u FUELS. Phmb-Lilbognphan Washington, 04 c.

UNITED STATES HARVEY 'r. LIToHmELD, or

MASSACHUSETTS. V

UTILIZING EXHAUST-STEAM.

SPECIFICATION forming part of Letters-Patent No, 260,034, dated June Application filed August 4, 1881. (No model.)

To all whom it may concern Be it known that we, HARVEY T. LI'roH- FIELD, of Hull, county of Plymouth, and DA- VID RENSHAW, of Oohasset, in the county of Norfolk, and both of the State ofMa-ssachusetts, have invented anew and useful Improvement in the Process of Utilizing Exhaust-Steam, of which the followingis aspecification.

The object of our invention is to force the exhaust; of an engine into the boiler from which it was taken without condensation or partial condensation. Its further object is to create within the boiler a circulation of the water by the induction of aforced body of heated water and the steam of the exhaust.

I t consists in the process hereinafter describedthat is to say, pumping hot water froma boiler, then forcing it through an addheater, where it is surcharged, then through a nozzle,where it is brought in contact with the exhaust of an engine, and by its velocityand momentum the combined water and steam are forced into the boiler.

It further consists in drawing the water from a boiler, under pressure, by mechanical means, forcing it through and retarding it in an add-heater, then forcing it through a nozzle, where it comes in contact with the exhaust of an engine and injects it into the wa ter of the same boiler from which it was taken.

It further consists in minor details of construction and arrangement, as will more fully hereinafter appear.

Referring to the drawings, Figure 1 illustrates partly a side and partly an end elevation; Fig. 2, a side elevation, showing the various connections.

A is the boiler. B is the engine, and (J is the pump. D is the furnace; E, the addheater; F, the live-steam pipe, and G the exhaust-pipe; H, the steam-pipe to the pump;

and I, the exhaust of the pump, communicat ing with the exhaust-pipe of the engine; J, the feed-pipe from the boiler to the pump; K, the pipe leading from the pump to the addheater into the exhaust-pipe G; M, apipe connecting pipes J and K; N, the lower injection-pipe, when such is desired to be used in pipe, as shown at G.

connection with the lower end of the exhaust- We prefer to use the lower injection-pipe, for the reason that when the water and steam are forced into the boiler through the water a rapid circulation of the water in the boiler ensues.

If preferred, t-he water may be pumped from one end of the boiler and, with the exhauststeam, be injected into'the other end, thus creatin g a circulation through the boiler from one end to the other.

All the various pipes and conduits are provided with valves for regulating the flow PATENT OFFICE.

through them, the object of which is well known.

. The following is'the method of operation: Steam is generated to the required pressure. The pump is then put in operation. The water drawn from the bottom of the boiler is then add-heated and afterward forced into the same boiler. The engine is now started, and the exhaust therefrom meets the injection-water from the pump, and by the velocity and momentum of the water is forced into the boiler. To prevent the add-heater from burning while steam is being raised in the boiler, circulation is kept up through it by opening cocks n q and a or a. When the pump is set in motion the cock n is closed.

The mechanical means for drawing, pumping, and forcing the water are so arranged as to give any desired pressure, force, and velocity to the water entering the boiler.

Having now described our invention, its construction, and operation,what we claim as new, and desire to secure by Letters Patent,

1. The process herein described of drawing the water from a boiler under pressure by mechemical means, forcing it through an addheater, then forcing it through a nozzle, when it comes incontact with the exhaust of an engine and forces it into the boiler.

2. The combination, in an apparatus for whereby the water from the same boiler is made to force the exhaust of the engine into In testimony whereof we have signed our to said boiler, substantially as set forth and denames to this specification in the presence of scribed. two subscribing witnesses.

3. The combination, in an apparatus for HARVEY T LITOHFIELD utilizing the exhaust-steam, of the boiler A, D AVID RENSHAW.

engine B, pump 0, add-heater E, and waterpipes J, K, M, and L with the exhaust-pipe Gr, Witnesses: substantially in the manner shown and de- J. H. ADAMS, scribed. B. OHARA. 

